Gas-cleaner.



J.' RUDDIMAN.

GAS CLEANER.

APPLICATION FILED APR.25. |917.

Patented. Jan. 22, i918.

2 SHEETS*SHEET lK "El lnvemmr:

` l. RUDDIMAN.

` GAS CLEANER. PPLICATIOISI FILED APR.-25 1917.

fmend 1m. 22,1918.

2 SHEETS-SHEET 2.

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HEUTE@ TATES JOHN-"Rowman, oF'iras'rINes-Uron-nnnson, nnarizona..v

GAS-CLEANER.

Specification of Letters Patent.

Patented rance, raie.

Application afee Aprii 25, 1917. serial No. 164,424.`

To all uhom it may] concern:

Be' it known that I. Jol-IN RUDD'IMN, a citizen ofthe Unitedstates'of America, and residing Vat Hastings-uponI-udson, in the county ot Westchester and State ot' New York, have invented a certain new and usef ful :improvement in Gas-Cleaners, ot' which the following is a specification. c

This invention `relates to gas cleanersand particularly to gas cleaners for use in connection with blast iurn'ace gases. y The Ob.

Referring to the accompanying ldrawings,

`Figure lis an end elevation "of =a gas cleanerin whichmyinvention is embodied in one term;

Fig. 2 is a crosss'ectionl on"tl1`eline"2-2, Fig. 1; and

`Eig. 3 is a cross'sectio'n onthe line 3;-3, l

Fig. 2.

In the form here shownthefapparats is mounted upon a` support'IO and comprises a rectangular tank 11 having-ahopper bottcm l2'for holding the wash water and a semi-circular -coverl which incloses a gas chamber 14 to which opens thegas inlet pipel at one endand the lgas outletpipe 1G 'att-he opposite end. iassinglonitudinally 'through the tank 11 is a shaft 17 supported and ldriven from vwithout the tank by any suitable'meansihiot shown). AStuffing boxes 18 are provided to prevent the escape of gas at the points at Whiclrthc shaft pierces the wall ot' thetank. Upon the rectangular mid-portion ot the shaft within the tank, is arranged 4a series of circular perforated battle plates 1 9 and 20. NozzlesQl are. fitted into theholes'of each battle plate, except the last ot the series, the suinof the iare'a' of the nozzlesin each baille being slightlyin excess ot twice the areaof the gas inlet pipe The baille plates' are :suitably spaced fapart along the shaft and supported in a verticalV positionand parallel to `each other by terrules 22 on the shaft and' by t'errules Q3 on the bolts 24 which pass through the; series of `battles at a con# venient radial distance from theV shaft and bind .1i the battles together 'Wlnzn4 they nuts 25 but as far as l are set up. Collars 26 at each end ofthe balileseries are secured upon the shaft by set screws and maintain the same in predetermined position upon the shaft. Alternatively the baliies may be secured to the shatt by '[ianges bolted to each battle and having hubs, with set screws, which serve to space the battles apart. This construction would be employed preferably in gas cleaners of large size. Y y .f

In any event, the baliies 19 and 20 have their nozzles 21 so arranged that those of theV battles 19 discharge against the blank intcrspaces between the nozzles 211 on the battles 20. and vice versa, so that the gas issuing from the nozzles in fairly close Vproximity to the adjacent batiesis brought into intimate YContact with the blank spaces of the latter. There is consequentlylittle or no chance for, solid particles in the gas to be carried through the v cleaner without coming in Contact with the wetted surface of some one or Aother of the successive baliies. lVhile the arrangement of the perforations in the battle platesl maybevariously moditied,` I prefer that shown, viz.w ith the holes arrangedin parallel lines at right angles to each other, since bythis. arrangement I secure the greatest number of apertures and the least weakening of the battle plate in proportion toits capacity. I am awarethat in prior art cleaners of this generaltype the apertures in the baille plates` have been arranged in staggered relation toY eachother have been able to discover the.V practice has l'ieretotorebeen to arrange the apertures in radial lines with the result that they'atford less passageway for a given plates. A

Arranged between the batiles are .spray lpipes 27, while at the inlet andontlet ends of the gas chamber 14 are spray pipes 28. Thelatter aredesigned to throw a` spray discharged not only against .A the adjacent faces of juxtaposedjjbaliies but, also into the nozzles thereof, sothatboth tliesurtaces of thebatlles and theinteriorot the nozzles are cleaned; Thespray pipes areal] connected to aiinan'itbldrzZQ whichhas a main control diameter bafie'l'ilate,` and the apertures 'overlap toward the central portion of the valve 30, while each spray pipe is provided with an independent control valve 3l, so that some or all of the spray pipes may be utilized as may be deemed necessary.

At the ends of the tank 1l, I provide overiioiv troughs 32 which maintain the normal level ot' the water iii the tank slightly below the center line ot' the shaft. A Water seal is provided by the outlet pipe 33 connected with the overflow trough 32 and maintains the water level in the latter lower than that of the water in the tank l1.

In the opei'ation ot' blast furnaces large quantities of solid materials are discharged With the gas. 'lhe coarser portion of this material is deposited in a large chamber known as a dust-catcher, and the finer par ticles pass on with the gas to the stoves and boilers if not arrested and removed. For this purpose many types of gas cleaners are employed, with more or less success, to remove tlie dirt, but at. considerable expense to keep the cleaners clean and also by reason of the consumption of large quantities' of Water. I minimize the expense of the clean-V ing operation by combining the principle of the contact type of cleaner with the scrubber type in such manner that I can provide either cool or hot gas at will in an apparatus that is practically self-cleaning and economical in the use of water. The gas coming from the dust-catcher at its initial temperature and velocity enters the gas chamber 1l where its volume is broken up into a large number ofV jets by its passage through the nozzles 21. A portion ot' the dust is deposited on the Wet surface of the iirst baille. Passing through the nozzles of the first baille the gas jets impinge on the Wet blank surfaces of the second baiiie which surfaces are directly opposite the nozzles. The velocity ot' the gaspassing through the nozzles is substantially undiminished, since the sum of the areas of the nozzles above the water level is substantially equal to that of the inlet pipe or slightly greater than the latter. Dust is deposited on each baille in succession in this way, the process being repeated as many times as desired and being determined by the number of bailleplates used. The degree of conservation of the temperature ot' the gas governs in this type of cleaning. If it is desired to cool the gas sutiiciently to use itin internal combustion engines, the spray pipes between the baiiies will be brought into play to furnish cooling water in finely divided form, therebv fur- "ther increasing the eiiiciency of the cleaner by scrubbing the gases as they pass between the bailles. It desired. it is possible to maintain the baffles quiescent and simply subject the gas to the action of the sprays, as it passes in its tortuous course through the. baille chamber. The dust deposited upon the battles is constantly removed by 'prevent their eilicient operation.

their rotary passage through the Water in the tank, so that they constantly present a freshly washed surface for the gas to 1mpinge against and the battles are kept cool and wet during their transit through the gas chamber, the nozzles having a bucket-like eiiect in lifting the Water into the gas chamber, thus conserving the supply on theV surface of the baiiie, While aiding in cleaning the gas as well `as the surfaces ot1 the baille plates. The water inthe tankf is constantly l therein. The main 34 'is open to the tank only when the spray pipes are not in use or should the tank be emptied by a mud-flushing operation during the use of the spray pipes. The scum which form in the trough is carried off-With the overow bythe outlet pipe 33.

Various modifications in detailV of construction will readily occur to those skilled in the art Vwithoutdeparting from what I claim as my invention.

1. In a gas cleaner, aichamber having means for maintaining a supply of Wash water in the lower portion thereofa gas inlet and a gas outlet for the chamber. a pair of rotary perforated baiiles dipping into the wash water and interposed between the gas inlet and gas outlet, the baille adjacent the gas inlet having nozzles projecting -from its` perforations and serving to'direct the gas passing therethrough against the interspaces betweenrthe perforations of the adjacent battle. Y

2. In a gas cleaner, a chamber having means for maintaining a'supply of wash Vwater in the lower portion thereof, a gas inlet and a gas outlet for the chambena pair of rotary bailles dipping into the wash water and interposed between the gas inlet and gas outlet, said battles khaving staggered pertorations and the baiiies adjacent the gas inlet having nozzles projecting from its perforations and serving to direct' ing from its perforations and serving to-di rectA the gas passing. therethroughagainstl the interspaces between the perforations of the adjacent baille, together with spray pipes between the baflies.

4. In a gas cleaner, a chamber' having means for maintaining a supply of wash water in the lower portion thereof, a gas inlet and a gas outlet for the chamber, a pair of rotary perforated baliies dipping into the wash water and interposed between the gas inlet and gas outlet, the baffle adjacent the gas inlet having nozzles projecting from its perforations and serving to direct the gas passing therethrough against the inter spaces between the perforations of the adjacent baffle, together with spray pipes between the baflies and having 'their spray jets directed toward both baffles.

5. In a gas cleaner, a chamber having means for maintaining a supply of wash water in the lower portion thereof, a gas inlet and a gas outlet for the chamber, a pair of rotary perforated balies dipping into the wash water and interposed between the gas inlet and gas outlet, the baffle adjacent the gas inlet having nozzles projecting from its perforations and serving to direct the gas passing therethrough against the interspaces between the perforations ofthe ad jacent baffle, together with spray pipes be tween the bafles and means independent of the spray pipes for supplying wash water to the tank.

6. In a gas cleaner of the type specied in claim 1, the arrangement of the perforations in each baffle plate in lines at right angles to each other, to secure the greatest possible passage area in a plate of given diameter.

7. In a gas cleaner, a chamber having means for maintaining a supply of wash water in the lower portion thereof, a gas inlet and a gas outlet for the chamber, rotary perforated baiiies dipping into the wash water and interposed between the gas inlet and gas outlet, and bucket-lilte means pro- 3" jecting from the faces of the baffles for lift* ing the wash water from the lower portion of the tank and discharging it over that face of the baiies against which the gas impinges during its passage through the chamber.

In testimony whereof I have signed my name to this specification.

JOI-IN BUDDIMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Batenta,

Washington, D. C. 

